gun-target line 炮目线
weapon target line [军] 武器目标线
primary target line 主要目标线
gun target line 炮目线
radar-target line 雷达目标线
Tracking the ball's flight, too, can be a challenge, particularly for shots that fly far from the target line (though that is a problem that is not, shall we say, exclusive to the nighttime).
追踪球的飞行轨迹可能也是个挑战，尤其是那些打偏了的球(虽然我们说，那个问题并非夜间打高尔夫球所独有的)。
The transformable target line without wall interference can be chosen according to the test model to improve the residual interference distribution in model area.
可根据实验模型的布局特征选择在水平面内可变形状的零洞壁干扰目标线，以改善模型区残余干扰分布特性。
The burning rate was measured with target line method and the pressure index was calculated. The catalytic effect of different catalysts for propellant on combustion performance were explored.
采用靶线法对推进剂的燃速和压力指数分别进行了测定和计算，根据燃速和压力指数的变化，最终考察各种复合粉末对推进剂燃烧性能的催化作用。
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